Potential of a bacterial consortium to degrade azo dye Disperse Red 1 in a pilot scale anaerobic-aerobic reactor

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dc.contributor.authorFranciscon, Elisangela
dc.contributor.authorMendonca, Danilo
dc.contributor.authorSeber, Samile
dc.contributor.authorMorales, Daniel Alexandre
dc.contributor.authorZocolo, Guilherme Juliao [UNESP]
dc.contributor.authorZanoni, Maria Valnice Boldrin [UNESP]
dc.contributor.authorGrossman, Matthew James
dc.contributor.authorDurrant, Lucia Regina
dc.contributor.authorFreeman, Harold S.
dc.contributor.authorUmbuzeiro, Gisela Aragao
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionN Carolina State Univ
dc.date.accessioned2015-10-21T20:22:38Z
dc.date.available2015-10-21T20:22:38Z
dc.date.issued2015-05-01
dc.description.abstractThe textile industry is the largest consumer of azo dyes and activated sludge treatment systems typically used to remove them are frequently inefficient, resulting in significant quantities of these compounds adsorbed in the sludge or released into water bodies. The aim of this study was to evaluate the biodegradation of the commercial azo dye Disperse Red 1 in a pilot scale anaerobic-aerobic reactor inoculated by a microbial consortium selected for its capacity to degrade azo dyes. Dye decolorization (80%) occurred in 60 h in the anaerobic reactor and 92% COD (chemical oxygen demand) was removed as measured in the treated effluent. LC-ESI-MS/MS of the treated effluent showed the formation of a reduced azo bond and azo bond cleavage and subsequent degradation products. Aromatic amines produced by the cleavage of the azo bond were not detected. Toxicity tests performed with Daphnia similis and Hydra attenuate in the treated effluent showed that the toxicity was reduced significantly. Mutagenicity, evaluated using the Salmonella/microsome Ames test, found the untreated dye medium was only mutagenic toward Salmonella strain YG1041. However after treatment, only marginal mutagenicity was observed. These results indicate the bacterial consortium was effective in biodegrading Disperse Red 1 and also reducing the toxicity and mutagenicity and may represent a promising application for dyes biodegradation. (C) 2015 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUniv Estadual Campinas, Sch Technol, BR-13484332 Limeira, SP, Brazil
dc.description.affiliationPaulista Julio Mesquita Filho State Univ, Inst Chem, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUniv Estadual Campinas, Food Engn Fac, BR-13083970 Campinas, SP, Brazil
dc.description.affiliationN Carolina State Univ, Dept Text Engn Chem &Sci, Raleigh, NC 27695 USA
dc.description.affiliationUnespUniversidade Estadual Paulista, Departamento de Química Analítica, Instituto de Química, BR-14801970 Araraquara, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2008/10449-7
dc.description.sponsorshipIdFAPESP: 2009/12739-5
dc.format.extent816-825
dc.identifierhttp://www.sciencedirect.com/science/article/pii/S1359511315000562
dc.identifier.citationProcess Biochemistry. Oxford: Elsevier Sci Ltd, v. 50, n. 5, p. 816-825, 2015.
dc.identifier.doi10.1016/j.procbio.2015.01.022
dc.identifier.issn1359-5113
dc.identifier.urihttp://hdl.handle.net/11449/129106
dc.identifier.wosWOS:000354147700017
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofProcess Biochemistry
dc.relation.ispartofjcr2.616
dc.relation.ispartofsjr0,761
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectDisperse Red 1en
dc.subjectBioreactoren
dc.subjectBiodegradationen
dc.subjectMicrobial consortiumen
dc.subjectMetabolitesen
dc.subjectToxicityen
dc.titlePotential of a bacterial consortium to degrade azo dye Disperse Red 1 in a pilot scale anaerobic-aerobic reactoren
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0002-2296-1393[6]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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